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/*
* Copyright 2014, The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.telecom;
import android.annotation.SystemApi;
/**
* Defines call-state constants of the different states in which a call can exist. Although states
* have the notion of normal transitions, due to the volatile nature of telephony systems, code
* that uses these states should be resilient to unexpected state changes outside of what is
* considered traditional.
*
* {@hide}
*/
@SystemApi
public final class CallState {
private CallState() {}
/**
* Indicates that a call is new and not connected. This is used as the default state internally
* within Telecom and should not be used between Telecom and call services. Call services are
* not expected to ever interact with NEW calls, but {@link InCallService}s will see calls in
* this state.
*/
public static final int NEW = 0;
/**
* The initial state of an outgoing {@code Call}.
* Common transitions are to {@link #DIALING} state for a successful call or
* {@link #DISCONNECTED} if it failed.
*/
public static final int CONNECTING = 1;
/**
* Indicates that the call is about to go into the outgoing and dialing state but is waiting for
* user input before it proceeds. For example, where no default {@link PhoneAccount} is set,
* this is the state where the InCallUI is waiting for the user to select a
* {@link PhoneAccount} to call from.
*/
public static final int PRE_DIAL_WAIT = 2;
/**
* Indicates that a call is outgoing and in the dialing state. A call transitions to this state
* once an outgoing call has begun (e.g., user presses the dial button in Dialer). Calls in this
* state usually transition to {@link #ACTIVE} if the call was answered or {@link #DISCONNECTED}
* if the call was disconnected somehow (e.g., failure or cancellation of the call by the user).
*/
public static final int DIALING = 3;
/**
* Indicates that a call is incoming and the user still has the option of answering, rejecting,
* or doing nothing with the call. This state is usually associated with some type of audible
* ringtone. Normal transitions are to {@link #ACTIVE} if answered or {@link #DISCONNECTED}
* otherwise.
*/
public static final int RINGING = 4;
/**
* Indicates that a call is currently connected to another party and a communication channel is
* open between them. The normal transition to this state is by the user answering a
* {@link #DIALING} call or a {@link #RINGING} call being answered by the other party.
*/
public static final int ACTIVE = 5;
/**
* Indicates that the call is currently on hold. In this state, the call is not terminated
* but no communication is allowed until the call is no longer on hold. The typical transition
* to this state is by the user putting an {@link #ACTIVE} call on hold by explicitly performing
* an action, such as clicking the hold button.
*/
public static final int ON_HOLD = 6;
/**
* Indicates that a call is currently disconnected. All states can transition to this state
* by the call service giving notice that the connection has been severed. When the user
* explicitly ends a call, it will not transition to this state until the call service confirms
* the disconnection or communication was lost to the call service currently responsible for
* this call (e.g., call service crashes).
*/
public static final int DISCONNECTED = 7;
/**
* Indicates that the call was attempted (mostly in the context of outgoing, at least at the
* time of writing) but cancelled before it was successfully connected.
*/
public static final int ABORTED = 8;
public static String toString(int callState) {
switch (callState) {
case NEW:
return "NEW";
case CONNECTING:
return "CONNECTING";
case PRE_DIAL_WAIT:
return "PRE_DIAL_WAIT";
case DIALING:
return "DIALING";
case RINGING:
return "RINGING";
case ACTIVE:
return "ACTIVE";
case ON_HOLD:
return "ON_HOLD";
case DISCONNECTED:
return "DISCONNECTED";
case ABORTED:
return "ABORTED";
default:
return "UNKNOWN";
}
}
}
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